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Electronic phase diagram of La$_{1.875}$Ba$_{0.125-x}$Sr$_x$CuO$_4$

M. Fujita·H. Goka·K. Yamada
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Abstract

We performed systematic measurements of magnetic susceptibility on single crystals of La$_{1.875}$Ba$_{0.125-x}$Sr$_x$CuO$_4$. The dependence of the superconducting transition temperature on Sr-concentration demonstrates a step-like pattern upon doping at {\it x}$\sim$0.08 as the crystal structure changes from low-temperature tetragonal (LTT) to low-temperature orthorhombic (LTO) phase at low temperature. Upon cooling, an anomalous upturn in the susceptibility was observed at the structural phase transition between the LTT-LTO phases under the magnetic field parallel to {\it c}-axis.

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M. Fujita, H. Goka, K. Yamada. 2000-10-03. Electronic phase diagram of La$_{1.875}$Ba$_{0.125-x}$Sr$_x$CuO$_4$. https://doi.org/10.1142/s0217979200003629

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